获取用户的当前位置/坐标
我对iOS开发很陌生。 不完全，但不完全是非常有经验的。
但基本上我只是想知道如何去存储用户的当前位置，并显示在地图上的位置。
我能够在地图上显示预先定义的坐标，我只是不知道如何从设备接收信息。
另外我知道我必须添加一些项目到Plist中。 你能和我一起去做我会怎么做吗？
要获取用户的当前位置，您需要声明：
let locationManager = CLLocationManager()
在viewDidLoad()你必须立即CLLocationManager类，如下所示：
// Ask for Authorisation from the User. self.locationManager.requestAlwaysAuthorization() // For use in foreground self.locationManager.requestWhenInUseAuthorization() if CLLocationManager.locationServicesEnabled() { locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters locationManager.startUpdatingLocation() }
然后在CLLocationManagerDelegate方法中可以得到用户当前的位置坐标：
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { var locValue:CLLocationCoordinate2D = manager.location.coordinate print("locations = \(locValue.latitude) \(locValue.longitude)") }
在info.plist中，您将不得不添加NSLocationAlwaysUsageDescription和您的自定义警报消息，如AppName（Demo App）想要使用您当前的位置。
你应该这样做：
- 将
CoreLocation.framework添加到BuildPhases – >使用库链接二进制文件（不再需要XCode 7.2.1） - 导入
CoreLocation到你的类 – 可能ViewController.swift - 将
CLLocationManagerDelegate添加到您的类声明中 - 添加
NSLocationWhenInUseUsageDescription和NSLocationAlwaysUsageDescription来plist -
初始位置pipe理器：
locationManager = CLLocationManager() locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestAlwaysAuthorization() locationManager.startUpdatingLocation() -
获取用户地点通过：
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { var locValue:CLLocationCoordinate2D = manager.location.coordinate print("locations = \(locValue.latitude) \(locValue.longitude)") }
这是我的方式
获取当前位置并在Swift 2.0中显示在Map上
确保你已经添加了CoreLocation和MapKit框架到你的项目中 （这在XCode 7.2.1中不需要）
import Foundation import CoreLocation import MapKit class DiscoverViewController : UIViewController, CLLocationManagerDelegate { @IBOutlet weak var map: MKMapView! var locationManager: CLLocationManager! override func viewDidLoad() { super.viewDidLoad() if (CLLocationManager.locationServicesEnabled()) { locationManager = CLLocationManager() locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestAlwaysAuthorization() locationManager.startUpdatingLocation() } } func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { let location = locations.last! as CLLocation let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude) let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)) self.map.setRegion(region, animated: true) } }
这是结果屏幕
NSLocationWhenInUseUsageDescription =当应用程序在后台时请求使用位置服务的权限。 在你的plist文件中。
如果这个工作，然后请投票的答案。
首先导入Corelocation和MapKit库：
import MapKit import CoreLocation
从CLLocationManagerDelegateinheritance到我们的类
class ViewController: UIViewController, CLLocationManagerDelegate
创build一个locationManagervariables，这将是您的位置数据
var locationManager = CLLocationManager()
创build一个函数来获取位置信息，具体来说这个确切的语法工作原理：
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
在你的函数中为用户当前的位置创build一个常量
let userLocation:CLLocation = locations[0] as CLLocation // note that locations is same as the one in the function declaration
停止更新位置，这可以防止您的设备在移动的同时不断地更改窗口以居中您的位置（如果您希望它可以正常工作，则可以省略）
manager.stopUpdatingLocation()
从userLocatin获取用户坐标，您刚定义：
let coordinations = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude,longitude: userLocation.coordinate.longitude)
定义如何缩放你想要的地图：
let span = MKCoordinateSpanMake(0.2,0.2)结合这两个得到区域：
let region = MKCoordinateRegion(center: coordinations, span: span)//this basically tells your map where to look and where from what distance
现在设置该地区，并select是否要使用animation去那里
mapView.setRegion(region, animated: true)
closures你的function}
从你的button或另一种方式，你想将locationManagerDeleget设置为自我
现在允许显示位置
指定准确度
locationManager.desiredAccuracy = kCLLocationAccuracyBest
授权：
locationManager.requestWhenInUseAuthorization()
要能够授权位置服务，您需要将这两行添加到您的plist
获取位置：
locationManager.startUpdatingLocation()
展示给用户：
mapView.showsUserLocation = true
这是我的完整代码：
import UIKit import MapKit import CoreLocation class ViewController: UIViewController, CLLocationManagerDelegate { @IBOutlet weak var mapView: MKMapView! var locationManager = CLLocationManager() override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } @IBAction func locateMe(sender: UIBarButtonItem) { locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestWhenInUseAuthorization() locationManager.startUpdatingLocation() mapView.showsUserLocation = true } func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { let userLocation:CLLocation = locations[0] as CLLocation manager.stopUpdatingLocation() let coordinations = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude,longitude: userLocation.coordinate.longitude) let span = MKCoordinateSpanMake(0.2,0.2) let region = MKCoordinateRegion(center: coordinations, span: span) mapView.setRegion(region, animated: true) } }
首先在你的项目中添加两个框架
1： MapKit
2： Corelocation （不再需要XCode 7.2.1）
在你的class级定义
var manager:CLLocationManager! var myLocations: [CLLocation] = []
然后在viewDidLoad方法中这个代码
manager = CLLocationManager() manager.desiredAccuracy = kCLLocationAccuracyBest manager.requestAlwaysAuthorization() manager.startUpdatingLocation() //Setup our Map View mapobj.showsUserLocation = true
不要忘记在plist文件中添加这两个值
1: NSLocationWhenInUseUsageDescription 2: NSLocationAlwaysUsageDescription
Swift 3.0
如果您不想在地图中显示用户位置，但只想将其存储在Firebase或其他位置，请按照下列步骤操作，
import MapKit import CoreLocation
现在在你的VC上使用CLLocationManagerDelegate，你必须覆盖下面显示的最后三个方法。 您可以看到requestLocation（）方法如何使用这些方法获取当前用户位置。
class MyVc: UIViewController, CLLocationManagerDelegate { let locationManager = CLLocationManager() override func viewDidLoad() { super.viewDidLoad() isAuthorizedtoGetUserLocation() if CLLocationManager.locationServicesEnabled() { locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters } } //if we have no permission to access user location, then ask user for permission. func isAuthorizedtoGetUserLocation() { if CLLocationManager.authorizationStatus() != .authorizedWhenInUse { locationManager.requestWhenInUseAuthorization() } } //this method will be called each time when a user change his location access preference. func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) { if status == .authorizedWhenInUse { print("User allowed us to access location") //do whatever init activities here. } } //this method is called by the framework on locationManager.requestLocation(); func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { print("Did location updates is called") //store the user location here to firebase or somewhere } func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) { print("Did location updates is called but failed getting location \(error)") } }
现在，只要用户login到您的应用程序，您就可以编写以下通话。 调用requestLocation（）时，它将进一步调用上面的didUpdateLocations，并且可以将该位置存储到Firebase或其他位置。
if CLLocationManager.locationServicesEnabled() { locationManager.requestLocation(); }
如果您正在使用GeoFire，那么在上面的didUpdateLocations方法中，您可以像下面那样存储位置
geoFire?.setLocation(locations.first, forKey: uid) where uid is the user id who logged in to the app. I think you will know how to get UID based on your app sign in implementation.
最后但并非最不重要的，转到您的Info.plist并启用“隐私 – 位于使用中的使用说明”。
当你使用模拟器进行testing时，总会给你一个在模拟器 – >debugging – >位置中configuration的自定义位置。
override func viewDidLoad() { super.viewDidLoad() locationManager.requestWhenInUseAuthorization(); if CLLocationManager.locationServicesEnabled() { locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters locationManager.startUpdatingLocation() } else{ print("Location service disabled"); } }
这是你的视图加载方法，并且在ViewController类中还包括如下的mapStart更新方法
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) { var locValue : CLLocationCoordinate2D = manager.location.coordinate; let span2 = MKCoordinateSpanMake(1, 1) let long = locValue.longitude; let lat = locValue.latitude; print(long); print(lat); let loadlocation = CLLocationCoordinate2D( latitude: lat, longitude: long ) mapView.centerCoordinate = loadlocation; locationManager.stopUpdatingLocation(); }
另外不要忘记在你的项目中添加CoreLocation.FrameWork和MapKit.Framework （不再需要XCode 7.2.1 ）
import CoreLocation import UIKit class ViewController: UIViewController, CLLocationManagerDelegate { var locationManager: CLLocationManager! override func viewDidLoad() { super.viewDidLoad() locationManager = CLLocationManager() locationManager.delegate = self locationManager.requestWhenInUseAuthorization() } //ViewDidLoad func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) { if status == .authorizedWhenInUse { locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.startUpdatingLocation() let locValue: CLLocationCoordinate2D = (manager.location?.coordinate)! print("locations = \(locValue.latitude) \(locValue.longitude)") }//if authorized }//locationManager func declaration }//VC Class
由于requestWhenInUseAuthorization的调用是asynchronous调用，因此应用程序在用户授予权限或拒绝它之后调用locationManager函数。 因此，在用户授予权限的情况下，将您的位置放置在该函数内部是正确的。 关于这个我find的最好的教程是： https : //www.hackingwithswift.com/read/22/2/requesting-location-core-location
// its with strongboard @IBOutlet weak var mapView: MKMapView! //12.9767415,77.6903967 - exact location latitude n longitude location let cooridinate = CLLocationCoordinate2D(latitude: 12.9767415 , longitude: 77.6903967) let spanDegree = MKCoordinateSpan(latitudeDelta: 0.2,longitudeDelta: 0.2) let region = MKCoordinateRegion(center: cooridinate , span: spanDegree) mapView.setRegion(region, animated: true)
你不必做很多东西，只需添加这两行，你就可以在地图上显示用户的当前位置，当用户点击button（你会有显示currnt位置button作为一个额外的好处:)）
mapView.myLocationEnabled = true mapView.settings.myLocationButton = true
